[Déjà Bru]

Yes. I would do the following:

1. Copy your OOTP 17 league file to a thumb drive.
2. Deactivate the license for your OOTP 17 installation.
3. Uninstall your OOTP 17 game on the old laptop.
4. Install OOTP 17 on your new laptop and activate the license.
5. Copy the league file to the saved games folder for OOTP17.
6. Test the league by calling it up and saving it again.
7. Install OOTP 18 on your new laptop and activate its license.
8. Use the "Import OOTP 17 Game" feature in OOTP 18.